consider the Kennewick Man scenario, too. you are in an ancient flood plain of the Truckee........if human, press to find out how old and such......we lost a "big one" with Kennewick man. And there is precedent for "Satika" people in your area, "spirit Cave man" for instance,......and the "red headed giant" mummies found in Lovelock cave.

A nurse fried and I were on the coast a few years back..Just walking along about 150 feet from homes.. She spots a femur leaning against a porch.. The guy had found it on the beach.. Thought it was from some animal.. We read later where he had turned it in..With the ocean there is no telling where it came from. I would not have noticed it . Let alone know what it was..